EP0889800A1 - Assise de siege a deformation controlee passive - Google Patents
Assise de siege a deformation controlee passiveInfo
- Publication number
- EP0889800A1 EP0889800A1 EP97919475A EP97919475A EP0889800A1 EP 0889800 A1 EP0889800 A1 EP 0889800A1 EP 97919475 A EP97919475 A EP 97919475A EP 97919475 A EP97919475 A EP 97919475A EP 0889800 A1 EP0889800 A1 EP 0889800A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seat
- motor vehicle
- bar
- longitudinal grooves
- vehicle seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42709—Seats or parts thereof displaced during a crash involving residual deformation or fracture of the structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/4207—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces
- B60N2/4214—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal
- B60N2/4221—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats characterised by the direction of the g-forces longitudinal due to impact coming from the front
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42727—Seats or parts thereof displaced during a crash involving substantially rigid displacement
- B60N2/42754—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion
- B60N2/42763—Seats or parts thereof displaced during a crash involving substantially rigid displacement of the cushion with anti-submarining systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
- B60N2/42—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles the seat constructed to protect the occupant from the effect of abnormal g-forces, e.g. crash or safety seats
- B60N2/427—Seats or parts thereof displaced during a crash
- B60N2/42772—Seats or parts thereof displaced during a crash characterised by the triggering system
- B60N2/42781—Seats or parts thereof displaced during a crash characterised by the triggering system mechanical triggering
Definitions
- the invention relates to a seat cushion for a motor vehicle.
- a vehicle impact it is known that the body of an occupant strapped to his seat moves relatively to the belt, in particular by a sliding of his pelvis along the seat, under the ventral part of said belt. This displacement increases the risk of injuries resulting from excessive compression of the body segments.
- anti-submarining bar a cross member located near the front part of said frame, hereinafter called anti-submarining bar.
- the anti-submarining bar limits exaggerated forward movements of the pelvis of the seat occupant and, consequently, preserves said occupant from abdominal lesions.
- the occupant's pelvis comes crashing down, in the event of a violent impact, on said bar causing pressure in the buttocks which can cause injury.
- the invention relates to a seat of a motor vehicle seat of the type comprising an anti-submarining bar, characterized in that said anti-submarining bar is fixed to the seat by means of means for limiting the forces transmitted by the anti-submarining bar to the occupant of the seat, said means of limiting the forces authorizing, beyond a determined value of the forces, a movement of the anti-submarining bar along a trajectory determined by guide means.
- the guide means comprise two rods fixed, symmetrically with respect to one another, at the ends of the anti-submarining bar with which they constitute a rigid assembly, said rigid assembly being mounted between vertical flanges connected together by an anterior cross member and a rear cross member to form the seat, the same rigid assembly resting by the front end of said rods on grooves disposed in front of the interior faces of said vertical flanges.
- each groove is constituted respectively by the space defined between the inner face of the flange and a collar disposed on the front crossmember.
- the guide means comprise lugs fixed respectively to the rear end of the rods and mounted respectively in longitudinal grooves made in the thickness of the corresponding flanges.
- the guide means comprise pins fixed respectively to the flanges and mounted respectively in longitudinal grooves made in the thickness of the corresponding rods.
- the means for limiting the forces are constituted by the longitudinal grooves and the pins, the width of the longitudinal grooves being less than the thickness of the pins.
- the width of the longitudinal grooves is variable along said longitudinal grooves.
- the seat cushion according to the invention makes it possible to control the trajectory of the anti-submarining bar and especially the force which it transmits to the occupant of the seat throughout the impact. We can thus determine a priori the maximum effort that the occupant will undergo and therefore, in particular, keep it below acceptable physiological limits. We can also vary this maximum effort from one type of vehicle to another at the cost of a very simple adaptation. This will, for example, reduce the maximum effort undergone in the case of using the seat according to the invention inside a vehicle whose body has good energy absorption properties . Other characteristics and advantages will appear on reading the description of an example of a device according to the invention, with reference to the drawings in which:
- FIG. 1 is a perspective view of the structure of a seat provided with a seat according to the invention in the rest position
- FIG. 2 is a view of FIG. 1 after displacement of the anti-submarining bar
- FIG. 3 is a view in longitudinal section of the seat according to the invention in which the rest position is shown in solid lines and the position after displacement of the anti-submarining bar in broken lines,
- FIG. 3A is a sectional view along the line IIIA-IIIA of FIG. 3,
- FIG. 3B is a sectional view along the line IIIB-IIIB in FIG. 3,
- FIG. 3C is a sectional view along the line IIIC-IIIC in FIG. 3,
- FIG. 4 is a schematic view showing the occupant seated in the seat provided with the seat according to the invention, before the impact,
- FIG. 5 is a view of Figure 4 after the impact.
- the seat 1 according to a first variant of the invention is shown in its rest position in Figure 1 where it is provided with a backrest 2.
- the seat 1 consists of two vertical flanges 3a, 3b mounted respectively on runners 4a, 4b themselves fixed to the floor of a vehicle.
- the two vertical flanges 3a, 3b are interconnected by an anterior crossmember 5 arranged at the front and at the bottom of the seat 1 and by a rear crossmember 6 arranged at the rear of said seat 1.
- An anti-submarining bar 7 is arranged transversely to the seat 1, above the front crossmember 5 and is fixed respectively at each of its ends, to rods 8a, 8b themselves arranged along the faces interior of the vertical flanges 3a, 3b.
- each of the links 8a, 8b is parallel to each other and form with the anti-submarining bar 7 a rigid assembly.
- Each of the links 8a, 8b rests, by its front end, in a groove 9a, 9b ensuring the lateral guidance of said links 8a, 8b.
- each groove 9a, 9b is respectively constituted by the space defined between the inner face of the flange 3a, 3b and a collar 10a, 10b disposed on the front crossmember 5.
- Each of the rods 8a, 8b is provided at its rear end with a lug ia, 11b mounted in a longitudinal groove 12a, 12b formed in the thickness of the corresponding flange 3a, 3b.
- Such a trajectory can be obtained by numerous configurations among which that combining longitudinal rectilinear grooves 12a, 12b with horizontal grooves 9a, 9b situated against the bottom in front of said grooves 12a, 12b is shown in the figures.
- the forward movement of the anti-submarining bar 7 is limited by means of energy dissipation well known to those skilled in the art and which will be determined so as to limit the force exerted by said bar 7 on the occupying the seat at values in the range from 300 to 900 daN.
- Such means could constitute, for example, a cylinder disposed along the grooves 12a, 12b and connecting the links 8a, 8b to the blanks 3a, 3b of the seat 1.
- FIGS. 4 and 5 show the occupant seated in the seat, the buttocks located at the limit between the seat 1 and the backrest 2, the anti-submarining bar 7 located under the thighs and the pins l ia, 11b disposed at the rear of the longitudinal grooves 12a, 12b.
- the width of the longitudinal grooves 12a, 12b and the thickness of the vertical flanges 3a, 3b are determined so that, for a given force, generally between 300 and 900daN, the lips of said longitudinal grooves 12a, 12b deviate, deformed by their respective tenons l ia, 11b driven forward by the anti-submarining bar 7, as shown schematically in Figures 2, 3 A and 3C.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9604320 | 1996-04-05 | ||
FR9604320A FR2747081B1 (fr) | 1996-04-05 | 1996-04-05 | Assise de siege a deformation controlee passive |
PCT/FR1997/000601 WO1997037869A1 (fr) | 1996-04-05 | 1997-04-03 | Assise de siege a deformation controlee passive |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0889800A1 true EP0889800A1 (fr) | 1999-01-13 |
EP0889800B1 EP0889800B1 (fr) | 2001-08-22 |
Family
ID=9490971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97919475A Expired - Lifetime EP0889800B1 (fr) | 1996-04-05 | 1997-04-03 | Assise de siège à déformation contrôlée passive |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0889800B1 (fr) |
DE (1) | DE69706289T2 (fr) |
ES (1) | ES2160948T3 (fr) |
FR (1) | FR2747081B1 (fr) |
WO (1) | WO1997037869A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2877284A1 (fr) | 2004-11-04 | 2006-05-05 | Peugeot Citroen Automobiles Sa | Dispositif d'anti-sousmarinage |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2772690B1 (fr) * | 1997-12-24 | 2000-02-18 | Faure Bertrand Equipements Sa | Assise d'un siege de vehicule automobile comportant une traverse d'anti-sous-marinage |
FR2777233B1 (fr) * | 1998-04-08 | 2000-05-19 | Peugeot | Assise de siege arriere de vehicule automobile avec dispositif d'anti-soumarinage |
FR2789026B1 (fr) * | 1999-01-28 | 2001-04-06 | Faure Bertrand Equipements Sa | Siege de vehicule comportant une traverse de securite mobile |
FR2796016B1 (fr) * | 1999-07-08 | 2001-09-14 | Renault | Systeme de retenue pour un occupant d'un siege automobile |
FR2798629B1 (fr) * | 1999-09-16 | 2001-11-09 | Faure Bertrand Equipements Sa | Assise d'un siege de vehicule automobile comportant une traverse d'anti-sous-marinage |
FR2832106B1 (fr) * | 2001-11-12 | 2005-02-18 | Faurecia Sieges Automobile | Assise d'un siege de vehicule automobile comportant une traverse d'anti-sousmarinage |
DE10231794A1 (de) * | 2002-07-10 | 2004-02-12 | Takata-Petri Ag | Kraftfahrzeugsitz |
DE102007031583A1 (de) | 2007-07-06 | 2009-01-08 | GM Global Technology Operations, Inc., Detroit | Sitzteil eines Kraftfahrzeugsitzes |
DE102016203445A1 (de) * | 2016-03-02 | 2017-09-07 | Brose Fahrzeugteile Gmbh & Co. Kg, Coburg | Fahrzeugsitz mit wenigstens einem Signalisierungsmittel zur Signalisierung einer Deformation an einem definierten Deformationsbereich des Sitzrahmens |
US9849817B2 (en) * | 2016-03-16 | 2017-12-26 | Ford Global Technologies, Llc | Composite seat structure |
DE102016222192A1 (de) | 2016-11-11 | 2018-05-17 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Fahrzeugsitz mit Sperrvorrichtung für ein absenkbares Sitzteil des Fahrzeugsitzes |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3631881A1 (de) * | 1986-09-19 | 1988-04-07 | Daimler Benz Ag | Rueckhaltevorrichtung fuer einen fahrzeuginsassen |
US4738485A (en) * | 1986-10-16 | 1988-04-19 | Trw Vehicle Safety Systems, Inc. | Seat assembly with occupant restraint system |
US5449218A (en) * | 1988-01-07 | 1995-09-12 | Life Force, Inc. | Vehicle safety device |
DE4020057C2 (de) * | 1990-06-23 | 1996-05-09 | Bayer Ag | Fahrzeugsitz |
WO1993001950A2 (fr) * | 1991-07-19 | 1993-02-04 | Massachusetts Institute Of Technology | Siege de securite |
US5374105A (en) * | 1992-11-19 | 1994-12-20 | Hoover Universal, Inc. | Vehicle seat assembly with improved front panel |
US5567006A (en) * | 1993-10-01 | 1996-10-22 | Mccarthy; Joseph | Vehicle seat with articulated sections |
-
1996
- 1996-04-05 FR FR9604320A patent/FR2747081B1/fr not_active Expired - Fee Related
-
1997
- 1997-04-03 DE DE69706289T patent/DE69706289T2/de not_active Expired - Lifetime
- 1997-04-03 EP EP97919475A patent/EP0889800B1/fr not_active Expired - Lifetime
- 1997-04-03 WO PCT/FR1997/000601 patent/WO1997037869A1/fr active IP Right Grant
- 1997-04-03 ES ES97919475T patent/ES2160948T3/es not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9737869A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2877284A1 (fr) | 2004-11-04 | 2006-05-05 | Peugeot Citroen Automobiles Sa | Dispositif d'anti-sousmarinage |
Also Published As
Publication number | Publication date |
---|---|
WO1997037869A1 (fr) | 1997-10-16 |
DE69706289T2 (de) | 2002-05-02 |
ES2160948T3 (es) | 2001-11-16 |
FR2747081A1 (fr) | 1997-10-10 |
DE69706289D1 (de) | 2001-09-27 |
EP0889800B1 (fr) | 2001-08-22 |
FR2747081B1 (fr) | 1998-05-07 |
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